MAT 2051 Unit 2 Discussion DQ1 Relational Databases
MAT 2051 Unit 2 Discussion DQ1 Relational Databases
MAT 2051 Unit 2 Discussion DQ1 Relational Databases
Relations and functions play important roles in computer applications, systems management, database management, and error management. In this discussion, you will look at relational databases and their functions and applications.
Databases are common computer and Internet technology applications. Online banking, shopping, iPhones, music, video, personal files, businesses, governments, and academic institutions all use databases to store, process, and retrieve information, including images, video, and music.
Suppose you are a database manager and oversee a large database with the following four tables: EMPLOYEE, DEPARTMENT, SUPPLIER, and BUYER.
Now, turn to page 168 in the text. Under Exercises, you will see these four tables listed as 3.6.4, 3.6.5, 3.6.6, and 3.6.7.
Part 1: Table and Database Operations
Complete the odd problems from 5 through 15 on page 169.
Write out each question fully.
Write a sequence of table operations to answer the query required for each question.
Provide the final answer to the query for each question.
Part 2: Researching the Web for Database Applications
Create two paragraphs that describe two current database application packages. For example, you might choose Oracle and SQL Server.
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Read about what these packages offer, how they are alike, how they are different, and what applications they are best suited for.
What language is commonly used to manipulate and communicate with database applications? Offer a few examples of statements from this language.
Review the Discussion Participation Scoring Guide prior to posting.
Response Guidelines
Read your peers’ posts and respond to two. Do you agree with your peer’s assessment of the problem? Explain.
This discussion allows you to work with your peers to complete and understand the assigned problem set for this unit. Remember, two initial posts and two response posts are required. Further posts are optional and recommended:
For the first post, select a problem from this unit’s problem set, write it out fully, solve it fully, and post it.
The second post can be a problem you cannot solve or another fully solved problem from the problem set. If there is a problem in the problem set that you are confused about, write it out fully and show any work that you have started. Note that you are stuck and ask for help. If you are able to solve every problem in the set without difficulty, post at least one other fully solved problem from the set as your second post.
The third and fourth posts are responses. Response guidelines are provided below and in every discussion.
Take advantage of this discussion area to work together as a class on the problem set. Post as many problems as you can and review as many of your peers’ posts as you can. Ask questions. Offer answers. If you are stuck on a problem, post your question. Working as a team will help each person gain a better understanding of the problem set and the concepts covered in this unit. Although the problem sets are not graded they will help you prepare for the quizzes in this course.
Response Guidelines
The third and fourth posts, the response posts, are your chance to help your peers. Explore the posts made by your peers and find people who are stuck. Help at least two peers through the problems they are stuck on. If you are unable to locate a peer who is stuck, you may instead choose a peer post, write out your solution to the same problem, and compare solutions and methods. The goal of this area is for the entire class to work together as a group on the entire problem set. You are also expected to complete and understand the problem set on your own in preparation for the quizzes and final exam.
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